Apparatus for treating gases



Sept. 27, 1931?..V F. J. PETREQUIN 1,879,463

APPgmATUs Fon TREATING GASES Filed Nov. '3. 1950 5 Sheets-Sheet l Sept.27,` 1932. F. J. PETREQUIN l y 1,879,463

APPARATUS FOR TREATIFNG GASES Filed Nov. 3, 1930 v5 Sheets-Sheet 2ATTORNEY Sept. 27, 1932. F. J. PETREQUIN A 1,879,463

APPARATUS FOR TREATING GASES Filed Nov. I5, 1930 SSheets-Sheet 3IIIIIIIIIIIIIIIIII,

INVENTOR ATTORNEY Patented Sept. 27, 1932 FREDERIC J. PETREQUIN, or si'.GnNvIEvE, mssounr APPARATUS For. TAr'rnG GASES Application led November3, Serial 17o. l493,138.

This invention relates to` an apparatus for treating gases, especiallycarbon dioxide gas, from lime kilns and the like, the general object ofthe invention being to provide means for drawing the gases from the topsof the kilns and passing them through a cleaner or filter to clean thesame, specifically for the purpose of preparation for the manufacture ofthe gas into a pure solidiiied state, with means for automaticallycontrolling the flow of gases through the system.'

This invention also consists in certain other features of constructionand in the combination and arrangement of the several "i5 parts, to behereinafter fully described, illustrated in the accompanying dpawi'ngsand specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several vviews, and in which :HFigure 1 is an elevation, with parts in section, showing one manner ofcarrying out the invention.

Figure 2 is a top plan view, of Figure 1.

Figure 3 is an enlarged sectional view showing the damper or valve meansfor causing the gases to either flow into the system or to escapethrough a discharge pipe.

Figure 4 is a section on line 4-4 of Figure 1.

In these drawings, the numeral 1 indicates a number of kilns, the topsof which are closed, as shown at 2, and each kiln is provided with adoor 3 in its top through which material can be placed into the kiln.The covers are preferably water cooled. A pipe 0 4 connects the top partof each kiln to a fan or blower 5 and the outlet of each blower isconnected with a stack 6. A pipe 7 connects veach stack intermediate theend of the stack to a pipe 8 which extends horizontally and receives thegases Jfrom all the kilns. A damper 9 is arranged in each stack and alever 10 is connected with the stem of each damper and a cable 11 isconnected to each end of the lever. Handles 12 are connected with thelower ends of the cables. Thusthe damperY can be moved to a positionwhere all the gases will escape through the stack or it can be moved toa position where some or all of the gases will flow through the pipe 7-into the? pipe 8". The gases flowing into pipe-8 are drawn; intov ablower 13 after passing through arelief chamber 14 which is providedwith a' stack' 1,5. A damper 16 is placed in thestack and has a pulley17 connected with its stem'. A cable18 passes over the pulley and hasone` end connected to a spring 19 and a weight 20-is` attached to theother end of the cable. *This4 arrangement provides a gravity balanceddamper which permits excess gases to escape through the stack 15,- thedamperf i exercising uniform resistance, regardless of its naturalgravitational center, by means of the spring. VThe blower `13 dischargesthe gases into a cylinder 21-through the'top of' which ahollow shaft 22passes, said shaft being rotated from any suitable source of power bythe means Y shown generally at 23. Tater or other liquid is" fed-into'the shaft from a suitable sourcev of supply'through a pipe 24 and per-`forated members'25 radiate from the shaft and have their interiors incommunica-tion withlthelshaft so that the water or otherliquidfvs'flillI be sprayed from said` members during the rotarymovement thereof. Blades or baiiles 26 also radiate from the shaft androtate therewithv for causing the lsprayed liquid to' thoroughly act onthe gases to clean the'san're.` The solids'and other impuritiesVpas'sfronr the cylinder through the overfiow pipe 27.YV The purifiedgases are takenfrom the" cylinder through the pipe'28 whichcommunicatesV with the top of the cylinder.

A valve 29 isarranged in the pipe' 8 between the chamber 14 and theblower anda spvrccket 30 is connected' with the stem of the valve'. A'shaft 31lis`journaled in a support 32"an`d' carries a sprocket 33X Achain 34 passes over the sprockets 30' and 33 and a weightedzl'ever 35is connected with the shaft 31. 'An'oilbell 36 is pla-ced.' at each sideof the upright 32 and the top portions of these bells are', connectedwith the lever 35. A pipe 37 connects the pipe 28 to one of the bellsand a by-pass 38 has its ends connected with the pipe 8 above and belowthe valve 29. This by-pass is connected by a pipe 39 with the otherbell. Valves 40 are arranged in the ends of the by-pass. Thus excesspressure in pipe 28 will raisethe top part of the bell 36, which is incommunication with the pipe 28, so that the lever will be tilted, andthis movement of the lever will be communicated by the chain andsprockets to the valve 29 `so o as to reduce the flow of Gases passinginto the iilter cylinder. Likewise, both back pressure and vacuum inpipe 8 will operate the other bell to provide ane'ven pressure in thefilter cylinder. Of course',"the valves 40 must 5 be properly adjustedto permitthe back pressure and vacuum in pipe 8 to properly act on thevalve operating means.

The operation of the apparatusds as follows Y- H' go .The upper valve isalways wide'open while the lower valve 40 is generally closed, except attimes when it is desired that the operation of the two pressurecylindersv 36-.36 should not be. In this case, the lower valve f 40 isopened slightly or cracked which, aly lows part of the pressure toescape into ,the lower portion of the stack 8. The adjusting x of theweight upon the arm 35 to the left "il A l should be far enough so thatit will exert, 3o enough leverage to balance the pressure in.I

the left-hand cylinder 36. There should be a balancing action betweenthepressure in the Y; upper valve 40 and the left-hand cylinder at the timewhen the valve 29 is wide open so J- that the right-hand cylinder isinoperative until the pressure in the pipe 28 becomes excessive, atwhich time the thrust from the right-hand cylinder 36 will close thevalve 29. The pipes 37 and 39 enter the cylinders 36-36 40 and extend uptherein. These cylindersare -flled with heavy oil while the invertedcans being hollow act as plungers and slide easily inside the outercylinders. This makes a very sensitive arrangement suiliciently strongto operate the valve 29. Y What I claim is: c Apparatus for treating gascomprising a pipe and suction fan, a by-pass pipe mounted upon saidpipe, a cylinder connected with the lo discharge end of the fan, awasher operating in the cylinder, an outlet pipe connected with thecylinder above the washer, a pair of oil bells, one being connected withthe last mentioned pipe and the other connected with said by-pass pipe,a `valve located in the rst mentioned pipe between the ends of thebypass pipe, a lever operatively connected with thev oil bells and meansoperatively connect-. ing said lever with said valve. In testimonywhereof I aiiX my signature.

FREDERIC J. PETREQUIN.

